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Hillstone T-Series vs Zscaler Cloud Firewall comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Sep 16, 2024

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

Fortinet FortiGate
Sponsored
Ranking in Firewalls
1st
Average Rating
8.4
Reviews Sentiment
6.9
Number of Reviews
592
Ranking in other categories
Secure Web Gateways (SWG) (2nd), Intrusion Detection and Prevention Software (IDPS) (1st), Software Defined WAN (SD-WAN) Solutions (1st), WAN Edge (1st), ZTNA (1st), Unified Threat Management (UTM) (1st)
Hillstone T-Series
Ranking in Firewalls
41st
Average Rating
7.4
Number of Reviews
3
Ranking in other categories
No ranking in other categories
Zscaler Cloud Firewall
Ranking in Firewalls
27th
Average Rating
8.2
Reviews Sentiment
6.3
Number of Reviews
20
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of June 2026, in the Firewalls category, the mindshare of Fortinet FortiGate is 15.1%, down from 21.7% compared to the previous year. The mindshare of Hillstone T-Series is 0.5%, up from 0.1% compared to the previous year. The mindshare of Zscaler Cloud Firewall is 1.0%, up from 0.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Firewalls Mindshare Distribution
ProductMindshare (%)
Fortinet FortiGate15.1%
Zscaler Cloud Firewall1.0%
Hillstone T-Series0.5%
Other83.4%
Firewalls
 

Featured Reviews

JK
IP Network Security Specialist at MTN Ghana
Process-Level CPU Visibility: Introduce detailed CPU-usage metrics per subsystem (e.g., IPS engine, logging) so administrators can quickly identify and address performance spikes.
Analytics with FortiAnalyzer. Being able to pull in logs not just from our FortiGates but from all our other firewalls and then get them in one view has been a game changer. Whether I’m building an executive dashboard or doing a deep dive forensics session, I get everything I need without navigating consoles.Straightforward Application Control. FortiGate spots and blocks unwanted apps (eq. like BitTorrent or streaming services) with accuracy. Segmentation with VDOMs. We’ve carved our data center into four logical ‘mini-firewalls’ enterprise, core, billing, and WAF—all on one box. Each has its own rules and logs, and any traffic between them still gets inspected. It’s like having multiple appliances without the extra hardware. Always-Up-to-Date Threat Feeds. Daily signature updates and AI-driven threat sensing mean we’re blocking the latest vulnerabilities almost as soon as they’re announced.
TahirMahmood - PeerSpot reviewer
IT Manager at Zubair Feeds
Is stable and has a user-friendly dashboard and a good interface
We installed Hillstone T-Series after a ransomware attack. The dashboard and user interface are very good We cannot secure a specific IP class with this firewall. Another loophole with Hillstone T-Series is that when we connect through WiFi and turn our hot spot on, all who connect through the…
Carlos Snel - PeerSpot reviewer
Director at Aquila ICT Solutions
Has streamlined secure deployments across large enterprises while offering reliable protection and intuitive management
The centralized management console, also referred to as the Zscaler dashboard, impacts the ability of my customers to respond to security incidents significantly. I see it as user-friendly, and clients are really happy with using it, which motivates them to keep using Zscaler Cloud Firewall because they enjoy the GUI. It's very intuitive, making it easy to navigate alerts and incidents. My clients rarely have questions about where to find specific information once Zscaler Cloud Firewall is running. The interface speaks for itself, requiring little to no additional training, which is a major plus. Advanced threat protection features in Zscaler Cloud Firewall are practically the key component that every customer wants. Unfortunately, it is an option and not included in the basic package. Clients need to pay for the next higher bundle to access it, but practically all clients I have dealt with want this feature 100%. Regarding visibility, I can confirm that Zscaler Cloud Firewall indeed includes a feature for application layer visibility embedded in the service. It provides visibility into what you're doing, which is especially interesting nowadays when discussing AI tools, as companies do not want their employees to copy-paste sensitive information into AI systems. We have seen cases such as Samsung's chip design where sensitive info got exposed. The visibility of applications, including cloud applications and AI tools, is significant for compliance with data policies, and you can also run reports and alerts on it.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"It has the same functionalities throughout the range of products."
"It is not a very costly product if you compare it with other products, and the return on investment is also good."
"The most valuable feature of this solution is Quota."
"There are several benefits that Fortinet FortiGate brings to the table, and I cannot speak of only one or two as it is too extensive."
"FortiGate is a great solution, although initially, it faced challenges in the Brazilian market due to lower brand recognition than Cisco. However, explaining and demonstrating its product format and offerings has proven easy. The cost-effectiveness and better features of FortiGate have made some clients skeptical. We set up a trial period, and they eventually opted for it. Many clients were convinced it was great after experiencing the solution's capabilities firsthand."
"It is easy to use and performs very well."
"It is a reliable solution."
"My primary use is for border protection for connectivity out onto the Internet, and this product has performed exceptionally well."
"Hillstone supports IOT setup and detecting intrusions from IOT or CCTV connectivity, and with this solution, we can also detect unauthorized devices plugged into the CCTV network and sound the alarm to the administrator."
"We installed Hillstone T-Series after a ransomware attack. The dashboard and user interface are very good."
"It has been stable so far."
"We found some limitations with Fortinet FortiGate, and we are satisfied with Hillstone T-Series right now."
"The only firewall able to monitor traffic from a CCTV network. Can detect unauthorized devices plugged into the network, which standard firewalls can't do."
"It helps a lot of companies to reduce their downtime. Also, It helps businesses in terms of being secured and protected from any threats."
"With regards to ease, with regards to scalability, with regards to performance and support, those are the kind of top features that I would always look at and I have had a great experience in general."
"Most of the features that Zscaler has to offer, we will deploy."
"The solution offers good sandboxing."
"Zscaler provides effective protection against various cyber threats ensuring a safe environment"
"The scalability is okay. We have around 2200 people using this solution."
"Includes advanced tech protection."
"Once you have Zscaler running you have access to configure it however you want."
 

Cons

"We also have FortiAnalyzer deployed here, so we want to enable the soft functionality of FortiGate and built-in compression for a firewall VPN use case. We want the ability to deploy a gateway for HTTPS enabled on this firewall. It is currently only for use in our headquarters."
"We had some experiences where they release something new and great, but some of the old features are disabled or they don't work well, which impacts the product satisfaction."
"A sandbox would be good in order to be able to inspect the emails containing spam and be able to validate the emails that contain malware, prior to delivering to the customer."
"They should make the product user-friendly and enhance the security features."
"Fortinet FortiGate has started implementing AI, however, it hasn't reached full maturity."
"I would like to see improvements in the IPS/IDS feature to enhance protection against attacks from attackers, including ransomware protection."
"I could not configure sFlow from the FortiGate graphical user interface. I realized that the sFlow configuration is available only from the CLI, and discovered that sFlow is not supported on virtual interfaces, such as VDOM links, IPsec, or GRE."
"I do not foresee the product being easy to scale. We find it so hard."
"Licensing is not cheap."
"Another loophole with Hillstone T-Series is that when we connect through WiFi and turn our hot spot on, all who connect through the hotspot get all the functions, and the security does not work."
"Licensing is not cheap, but there are customers who will buy because they understand that this has a cost involved and they will cater their budget for that."
"They have a very good technical support team, but I think there are some communication issues due to language differences."
"Zscaler doesn't do intra site segmentation, therefore, if you want segmentation within a branch office, that kind of traffic flow is not well addressed."
"There are several areas for improvement. Firstly, the GUI is outdated, with noticeable lags and delays, especially when generating reports for past transactions."
"Pricing is a challenge."
"The product could improve its integration with some legacy systems."
"There are some areas it could improve when it comes to blocking, we have to block some things manually."
"The issue right now is probably that Zscaler is not providing web browser isolation. Another solution, Menlo, offers this. For one customer, we had to send traffic to Menlo to do the isolation for us. It was requested by the customer so that they could integrate any iframe. Zscaler needs to add this type of feature in their next release."
"When it comes to customer support, there is room for improvement in Zscaler's service."
"Zscaler Cloud Firewall should have a better understanding of all dynamic cloud applications."
 

Pricing and Cost Advice

"Setup costs and pricing depends on many variables, but it's mostly affordable."
"We are currently evaluating a Palo Alto solution, and the pricing could be a reason for going for Palo Alto."
"I would rate the pricing a seven out of ten"
"The pricing is comprehensive and clear. You can easily understand what you are purchasing, including which features correspond to each license and maintenance contract. Overall, the information is straightforward. Additionally, compared to other vendors, their prices are competitive."
"Its pricing is good. It's average or normal as compared to Palo Alto and Check Point firewalls."
"If the customer is looking for SD-WAN, it comes free with FortiGate."
"The solution's price is average."
"I give the pricing of the solution a six out of ten."
"On a scale from one to ten, with one being low and ten being high price, I would rate the price of Hillstone T-Series at three. There are no additional costs other than renewal costs."
"We got a much cheaper price than that provided by Fortinet right now."
"It is not the most budget-friendly solution, but it's important to consider its overall value."
"There are licensing costs, and I would not say that it's a cheap vendor."
"It is expensive for small businesses."
"It comes at a significantly reduced cost while ensuring control and effectiveness."
"There are different subscription models available."
"There is an annual license required for the use of the Zscaler Cloud Firewall."
"Zscaler is priced too high compared to the cost of Fortinet."
"On a scale from one to ten, where one is cheap, and ten is expensive, I rate the solution's pricing an eight out of ten."
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Top Industries

By visitors reading reviews
Comms Service Provider
10%
Computer Software Company
9%
Manufacturing Company
9%
Financial Services Firm
7%
Construction Company
15%
Manufacturing Company
12%
Real Estate/Law Firm
10%
Comms Service Provider
10%
Construction Company
12%
Manufacturing Company
12%
Financial Services Firm
9%
Marketing Services Firm
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business369
Midsize Enterprise139
Large Enterprise195
No data available
By reviewers
Company SizeCount
Small Business5
Midsize Enterprise2
Large Enterprise13
 

Questions from the Community

Which is the better NGFW: Fortinet Fortigate or Cisco Firepower?
When you compare these firewalls you can identify them with different features, advantages, practices and usage a...
What is the biggest difference between Sophos XG and FortiGate?
From my experience regarding both the Sophos and FortiGate firewalls, I personally would rather use FortiGate. I know...
What are the biggest technical differences between Sophos UTM and Fortinet FortiGate?
As a solution, Sophos UTM offers a lot of functionality, it scales well, and the stability and performance are quite ...
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Earn 20 points
Which lesser known firewall product has the best chance at unseating the market leaders?
Netscope, Zscaler if they continue route they are on now. FIrewalls needs great deal of automation on each end, datac...
What is your experience regarding pricing and costs for Zscaler Cloud Firewall?
My experience with pricing, setup cost, and licensing was fine.
What needs improvement with Zscaler Cloud Firewall?
I think Zscaler Cloud Firewall can be improved by adding more features. The needed improvements involve scalability, ...
 

Also Known As

Fortinet FortiGate Next-Generation Firewall
Hillstone T-Series Intelligent Next-Generation Firewalls, Hillstone iNGFW
No data available
 

Overview

 

Sample Customers

Amazon Web Services, Microsoft, IBM, Cisco, Dell, HP, Oracle, Verizon, AT&T, T-Mobile, Sprint, Vodafone, Orange, BT Group, Telstra, Deutsche Telekom, Comcast, Time Warner Cable, CenturyLink, NTT Communications, Tata Communications, SoftBank, China Mobile, Singtel, Telus, Rogers Communications, Bell Canada, Telkom Indonesia, Telkom South Africa, Telmex, Telia Company, Telkom Kenya
University of Córdoba
Zenith Live, Azure, Carlsberg Group
Find out what your peers are saying about Hillstone T-Series vs. Zscaler Cloud Firewall and other solutions. Updated: June 2026.
902,495 professionals have used our research since 2012.